Fluctuating semiflexible polymer ribbon constrained to a ring

Twist stiffness and an asymmetric bending stiffness of a polymer or a polymer bundle is captured by the elastic ribbon model. We investigate the effects a ring geometry induces to a thermally fluctuating ribbon, finding bend-bend coupling in addition to twist-bend coupling. Furthermore, due to the geometric constraint the polymer's effective bending stiffness increases. A new parameter for experimental investigations of polymer bundles is proposed: the mean square diameter of a ribbonlike ring, which is determined analytically in the semiflexible limit. Monte Carlo simulations are performed which affirm the model's prediction up to high flexibility.Comment: 6 pages, 3 figures, Version as published in Eur. Phys. J.

Emergence of behavior in a self-organized living matter network

What is the origin of behavior? Although typically associated with a nervous system, simple life forms also show complex behavior – thus serving as a model to study how behaviors emerge. Among them, the slime mold Physarum polycephalum, growing as a single giant cell, is renowned for its sophisticated behavior. Here, we show how locomotion and morphological adaptation behavior emerge from self-organized patterns of rhythmic contractions of the actomyosin lining of the tubes making up the network-shaped organism. We quantify the spatio-temporal contraction dynamics by decomposing experimentally recorded contraction patterns into spatial contraction modes. Surprisingly, we find a continuous spectrum of modes, as opposed to few dominant modes. Over time, activation of modes along this continuous spectrum is highly dynamic, resulting in contraction patterns of varying regularity. We show that regular patterns are associated with stereotyped behavior by triggering a behavioral response with a food stimulus. Furthermore, we demonstrate that the continuous spectrum of modes and the existence of irregular contraction patterns persist in specimens with a morphology as simple as a single tube. Our data suggests that the continuous spectrum of modes allows for dynamic transitions between a plethora of specific behaviors with transitions marked by highly irregular contraction states. By mapping specific behaviors to states of active contractions, we provide the basis to understand behavior’s complexity as a function of biomechanical dynamics. This perspective will likely stimulate bio-inspired design of soft robots with a similarly rich behavioral repertoire as P. polycephalum

Pregnant Women's Satisfaction with The Quality of Antenatal Care (Anc) Services at The Obstech Of Poly of UPT Nene Mallomo Hospital, Sidrap District

In Indonesia, the quality of ANC services is still low in terms of ANC coverage which is still below the national target where data on coverage of pregnant women (K4) visits in Indonesia in 2021 is 87.48%, which means that it has not reached the target of the Ministry of Health's Strategic Plan in 2021, which is 95 %. Of the 34 provinces in Indonesia, only 3 provinces have achieved this target, namely the Riau Islands, DKI Jakarta and West Java. The purpose of this study was to know the relationship between the quality of antenatal care (ANC) services and the level of satisfaction of pregnant women at the midwifery polyclinic of UPT RSUD Nene Mallomo. The research design method used an analytic survey research with a cross-sectional approach, the number of samples was 83. The research instrument used a questionnaire, bivariate analysis used the Chi Square test. Results Based on data from 83 pregnant women who were dissatisfied with ANC services as many as 15 people (18.1%), based on Tangibles not good and dissatisfied 16 (19.3%), Empathy 16 (19.3%) The conclusion is that there is a relationship between satisfaction with Tangibles (P-value=0.000 OR 140.80), Reliability (P-value=0.000 OR 86.66), Responsiveness (P-value=0.000 OR 303.3), Assurance (P-value=0.000 OR 140.8 ) and Empathy (P-value = 0.000 OR 140.8) It is suggested that health workers improve counseling for pregnant women to make regular ANC visits

A chronic case of Madurella mycetoma involving left foot

Mycetoma is a localized chronic, suppurative, and deforming granulomatous disorder of subcutaneous tissue, skin and bones. Mycetoma is endemic in tropical and subtropical areas, where it is a real public health issue. It is a rare and neglected disease in our country. Etiological classification divides it into eumycetoma caused by fungus, and actinomycetoma caused by bacteria. Since the treatment of these two etiologies is completely different, a definite diagnosis after microbiological and histopathological examination, though difficult, is important. The disease is notoriously difficult to treat. Eumycetoma may be unresponsive to standard antifungal therapy. Authors report a case of eumycetoma in a 38 year-old male from Bihar, with history of thorn prick 30 yrs back. Madurella mycetomatis was isolated from the granular discharge from sinuses and itraconazole was given followed by surgical debridement of the lesion. The patient recovered well and is still on follow up

The right to a name: Back to the future

This article focuses on the right to a name, which in private law doctrine is traditionally considered a basic human right. The meaning of this right is indisputable and holds a fundamental value for everyone, since a name individualizes each person. However, the purpose of this article is not to tell the history of this right, but to study its nature. The development of the internet and digital technologies has made it possible to take a fresh look at the right to a name; when registering on social media, a person also uses his or her name, and in some cases acquires a pseudonym (nickname). In this study, the author aims at answering the question of what, in the era of the internet, is truly meant by the right to a name. Methodologically, there are two general approaches to understand the right to a name: the first one is AngloAmerican and the second one is European. While it is typical for common-law countries to consider a name as an element of privacy, in continental legal tradition the right to a name is considered as a type of personal right, as well as one of the conditions of legal capacity. Both approaches are re-examined in this study. Having started with the right to a name, in the final paragraph of the article the author reaches the issue of the right to a pseudonym. This topic is illustrated with the case of “the fight against rootless cosmopolitism”, when many representatives of the Jewish intelligentsia in the Soviet Union became victims of discrimination, at a time when it public authorities assumed that the use of a pseudonym was dangerous as they could lose control over the people; ironically, many modern states have declared the same criticism of the right to a nickname regarding the internet. This example clearly shows that, throughout history, non-democratic regimes have systematically attacked and diminished the right to a name. It is concluded that the advent of new technologies has not changed the essence of a name. Therefore, any unreasonable limitation of the right to a name and the right to a pseudonym should be defined as a violation of the basic principles of democracy and the rule of law

Free Convection from a Vertical Permeable Circular Cone with Pressure Work and Non-Uniform Surface Temperature

Laminar free convection from a vertical permeable circular cone maintained at non-uniform surface temperature with pressure work term is considered. Non-similarity solutions for boundary layer equations are found to exist when the surface temperature follows the power law variations with the distance measured from the leading edge. The numerical solutions of the transformed non-similar boundary layer equations are obtained by using two methodologies, namely, (i) a finite difference method and (ii) a series solution or perturbation method for small values of ξ, the dimensionless suction parameter. Solutions obtained in terms of skin-friction coefficient, local rate of heat transfer, velocity and temperature profiles for the values of Prandtl number, pressure work parameter and temperature gradient are displayed in both graphical and tabular forms. Finite difference solutions are compared with the solutions obtained by perturbation technique and found to be in excellent agreement near the leading edge

Viscous Dissipation Effects on MHD Natural Convection Flow Over a Sphere in the Presence of Heat Generation

In this paper, the viscous dissipation effects on magnetohydrodynamic natural convection flow over a sphere in the presence of heat generation have been described. The governing boundary layer equations are first transformed into a nondimensional form and the resulting nonlinear system of partial differential equations are then solved numerically using finite-difference method together with Keller-box scheme. The numerical results of the surface shear stress in terms of skin friction coefficient and the rate of heat transfer in terms of local Nusselt number, velocity as well as temperature profiles are shown graphically and tabular form for a selection of parameters set consisting of heat generation parameter Q, magnetic parameter M, viscous dissipation parameter N and the Prandlt number Pr

Open mirror symmetry for Pfaffian Calabi-Yau 3-folds

We investigate the open mirror symmetry of certain non-complete intersection Calabi- Yau 3-folds, so called pfaffian Calabi-Yau. We perform the prediction of the number of disk invariants of several examples by using the direct integration method proposed recently and the open mirror symmetry. We treat several pfaffian Calabi-Yau 3-folds in $\mathbb{P}^6$ and branes with two discrete vacua. Some models have the two special points in its moduli space, around both of which we can consider different A-model mirror partners. We compute disc invariants for both cases. This study is the first application of the open mirror symmetry to the compact non-complete intersections in toric variety.Comment: 64 pages; v2: typos corrected, minor changes, references added; v3: published version, minor corrections and improvement